12. Alarms
Rebel 80
78
-Check spindle for steps that catch bar
-Check prefeed distance parameter
- Setting should place the rear of the bar to rest slightly
on the edge of the channel so the pusher collet will clear the bar when the channel closes.
-Rotate the lathe spindle during the bar change
– If possible, rotate the lathe spindle at 50 –
100 RPM during the bar change. Most lathes can do this through the bar change program. The
bar feeder also has an Impulse relay that can be wired to the lathe to control the spindle
revolution during the bar change (the lathe must have a provision for this signal).
-Flashing or burrs on bar
– The front of the bar must be at least burr free and should have a
small chamfer.
-Steps in spindle
– A spindle liner may be required to provide a clear path for the material. A
larger chamfer on the front end of the bar may help the material past the steps.
-Collet too small for material
–Not applicable on the Rebel 80.
-Material too large for lathe collet
– Verify the collet diameter versus the OD of the bar stock
-Check signal from lathe
– Switch the lathe from Auto to Manual modes and check the signal
to the bar feeder.
-Check X22 input on PLC
–
Input 22
changes state with the mode of the lathe.
-Leave lathe in auto during bar change
– Some lathes must be left in cycle to maintain the
automatic signal. Turn of the single block mode and leave the lathe door closed during bar
change.
